CN209933076U

CN209933076U - Total knee joint replacement prosthesis

Info

Publication number: CN209933076U
Application number: CN201820367480.9U
Authority: CN
Inventors: 赵军强
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-03-19
Filing date: 2018-03-19
Publication date: 2020-01-14
Anticipated expiration: 2028-03-19

Abstract

The utility model discloses a total knee joint replacement false body, including the femoral prosthesis, the inside mounting hole that all is equipped with in both ends of femoral prosthesis, the inside intermediate position of femoral prosthesis is equipped with the arc hole, the inside dashpot that is equipped with in the outside of femoral prosthesis, the first spring of inboard fixedly connected with of dashpot, the other end fixedly connected with buffer block of first spring, the inboard of dashpot is cup jointed in the surface slip of buffer block, the other end fixedly connected with patella prosthesis of buffer block, the inboard sliding connection in arc hole has the slider. This total knee joint replacement prosthesis can carry out effectual joint to the injured patient of knee joint supplementary, can play the effect of an extrusion protection simultaneously in the kneecap position, reduces touching and the friction between femoral prosthesis and the muscle to tibial prosthesis passes through the pillar and imbeds in the skeleton, can guarantee the tension of pillar and skeletal tissue through the tension effect of lag.

Description

Total knee joint replacement prosthesis

Technical Field

The utility model relates to a total knee joint replacement false body technical field specifically is a total knee joint replacement false body.

Background

The knee joint is an important joint component when people walk and move, and if the knee joint is injured, the mobility can be greatly reduced, so that the mobility of the human body is greatly influenced.

Generally, when the knee joint is seriously injured, the knee joint needs to be subjected to auxiliary movement through a prosthesis, so that the normal movement capability of the knee joint is recovered as much as possible, but some existing prostheses cannot be provided with patella prostheses and some can be provided with simple patella prostheses.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a total knee joint replacement prosthesis to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a total knee joint replacement prosthesis, includes femoral prosthesis, femoral prosthesis's both ends inside all is equipped with the mounting hole, femoral prosthesis's inside intermediate position is equipped with the arc hole, femoral prosthesis's the inside buffer slot that is equipped with in the outside, the first spring of the inboard fixedly connected with of buffer slot, the other end fixedly connected with buffer block of first spring, the inboard of buffer slot is cup jointed in the surface slip of buffer block, the other end fixedly connected with patellar prosthesis of buffer block, the inboard sliding connection in arc hole has the slider, one side fixed mounting of slider has the arc piece, femoral prosthesis's inboard is hugged closely on the surface of arc piece.

Preferably, the other side of the sliding block is fixedly connected with a tibia support pad, the tibia support pad is made of polyethylene materials, the other side of the tibia support pad is fixedly connected with a tibia prosthesis, and a through hole is formed in the tibia prosthesis.

Preferably, the other side of the tibial prosthesis is welded with a support, a screw hole is formed in the support, a threaded bulge is formed in the outer side of the support, a gasket is tightly attached to the surface of the threaded bulge, a second spring is fixedly connected to the other side of the gasket, a protective sleeve is fixedly connected to the other end of the second spring, the surface of a port on one side of the protective sleeve is tightly attached to the surface of the tibial prosthesis, a nut is tightly attached to the surface of a port on the other side of the protective sleeve, and the inner side of the nut is in threaded connection with the surface of the.

Compared with the prior art, the beneficial effects of the utility model are that: this total knee joint replacement prosthesis can carry out effectual joint to the injured patient of knee joint supplementary, can play the effect of an extrusion protection simultaneously in the kneecap position, reduces touching and the friction between femoral prosthesis and the muscle to tibial prosthesis passes through the pillar and imbeds in the skeleton, can guarantee the tension of pillar and skeletal tissue through the tension effect of lag.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is an enlarged schematic view of the utility model at a;

fig. 3 is a schematic view of the pillar structure of the present invention.

In the figure: 1 femoral prosthesis, 11 mounting holes, 12 arc-shaped holes, 13 buffer grooves, 14 first springs, 15 buffer blocks, 16 patella prosthesis, 2 sliding blocks, 21 arc-shaped blocks, 22 tibial bearing pads, 23 tibial prosthesis, 24 through holes, 25 supports, 26 screw holes, 27 threaded bulges, 28 protective sleeves, 29 second springs, 210 gaskets and 211 nuts.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a total knee joint replacement prosthesis comprises a femoral prosthesis 1, mounting holes 11 are arranged inside two ends of the femoral prosthesis 1, the femoral prosthesis 1 and a femoral joint can be fixed through screws, an arc-shaped hole 12 is arranged in the middle of the interior of the femoral prosthesis 1, a buffer groove 13 is arranged inside the outer side of the femoral prosthesis 1, a first spring 14 is fixedly connected to the inner side of the buffer groove 13, the other end of the first spring 14 is fixedly connected with a buffer block 15, the surface of the buffer block 15 is in sliding sleeve connection with the inner side of the buffer groove 13, the other end of the buffer block 15 is fixedly connected with a patella prosthesis 16, so that friction between muscles and the femoral prosthesis 1 can be reduced as far as possible, the muscles and the femoral prosthesis 1 are protected, a sliding block 2 is in sliding connection with the inner side of the arc-shaped hole 12, an arc-shaped block 21 is fixedly arranged on one side of the sliding block 2, and, the other side of the sliding block 2 is fixedly connected with a tibial tray pad 22, the tibial tray pad 22 is made of polyethylene materials, the other side of the tibial tray pad 22 is fixedly connected with a tibial prosthesis 23, a through hole 24 is formed in the tibial prosthesis 23, a support post 25 is welded on the other side of the tibial prosthesis 23, a screw hole 26 is formed in the support post 25, a screw thread bulge 27 is formed in the outer side of the support post 25, a gasket 210 is tightly attached to the surface of the screw thread bulge 27, a second spring 29 is fixedly connected to the other side of the gasket 210, a protective sleeve 28 is fixedly connected to the other end of the second spring 29, the surface of a port on one side of the protective sleeve 28 is tightly attached to the surface of the tibial prosthesis 23, a nut 211 is tightly attached to the surface of a port on the other side of the protective sleeve 28, the surface of the screw thread bulge 27 on the inner side of the nut 211 is connected with the.

The utility model discloses when concrete implementation: when the protective sleeve is required to be used, the femoral prosthesis 1 is wrapped at a joint port of a femur, the femoral prosthesis 1 can be fixedly connected with a femoral joint by penetrating a bolt through the mounting hole 11, then the slider 2 connected with the tibial tray pad 22 is placed on the inner side of the arc-shaped hole 12, then the arc-shaped block 21 is fixed with the slider 2 by using a screw, so that the tibial tray pad 22 and the arc-shaped block 21 can be tightly attached to the surface of the femoral prosthesis 1, the slider 2 can slide on the inner side of the arc-shaped hole 12, can perform knee joint movement similar to normal, and can limit the movement range, then the protective sleeve 28 is sleeved on the surface of the strut 25, is tightly attached to the thread bulge 27 by the gasket 210, so that the protective sleeve 28 can be positioned, is connected with the surface of the thread bulge 27 by using the nut 211 in a threaded manner, so that the protective sleeve 28 can be tightly attached to the surface of the tibial prosthesis 23, and the protective sleeve, the tension in the tibial bone column groove can be ensured, then the tibial prosthesis 23 and the tibial joint port are fixed by the screws passing through the through holes 24 and the inner sides of the screw holes 26, and finally the tibial pad 22 and the tibial prosthesis 23 are fixed to complete the installation of the whole prosthesis structure.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A total knee replacement prosthesis comprising a femoral prosthesis (1), characterized in that: the inside mounting hole (11) that all is equipped with in both ends of femoral prosthesis (1), the inside intermediate position of femoral prosthesis (1) is equipped with arc hole (12), the outside inside of femoral prosthesis (1) is equipped with dashpot (13), the first spring of inboard fixedly connected with (14) of dashpot (13), the other end fixedly connected with buffer block (15) of first spring (14), the inboard of dashpot (13) is cup jointed in the surface slip of buffer block (15), the other end fixedly connected with patellar prosthesis (16) of buffer block (15), the inboard sliding connection of arc hole (12) has slider (2), one side fixed mounting of slider (2) has arc piece (21), the inboard of femoral prosthesis (1) is hugged closely on the surface of arc piece (21).

2. The total knee replacement prosthesis recited in claim 1, wherein: the other side of the sliding block (2) is fixedly connected with a tibia support pad (22), the tibia support pad (22) is made of polyethylene materials, the other side of the tibia support pad (22) is fixedly connected with a tibia prosthesis (23), and a through hole (24) is formed in the tibia prosthesis (23).

3. The total knee replacement prosthesis recited in claim 2, wherein: the opposite side welding of shin bone false body (23) has pillar (25), the inside of pillar (25) is equipped with screw hole (26), the outside of pillar (25) is equipped with screw thread arch (27), the surface of screw thread arch (27) is hugged closely has gasket (210), the opposite side fixedly connected with second spring (29) of gasket (210), the other end fixedly connected with lag (28) of second spring (29), the surface of shin bone false body (23) is hugged closely to one side port surface of lag (28), another side port surface of lag (28) is hugged closely has nut (211), the surface of the inboard threaded connection screw thread arch (27) of nut (211).